Installation, operation and maintenance instructions - DualSun XXXM
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60
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3BBP
V1.2
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March 2020
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41
2.3.4
Thermal output vs. flow rate behaviour
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For domestic hot water (DHW) applications, the recommended nominal flow rate is 32 L/h/panel.
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For applications towards a thermal discharge, the recommended nominal flow rate is 100 L/h/panel. For
example, towards a swimming pool or geothermal probes.
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For direct pool heating applications, the recommended nominal flow rate is 200 L/h/panel.
The curves below are given as an indication.
Figure 2 : Delta T = f (Q) curves for DUALSUN Spring XXXM
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60
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3BBPI
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insulated version
Figure 3 : Delta T = f (Q) curves for DUALSUN Spring XXXM
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60
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3BBPN
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non-insulated version
0,0
5,0
10,0
15,0
20,0
25,0
30,0
35,0
0
25
50
75
100
125
150
175
200
225
250
DT
°
[°
C]
FLOW RATE [L/H/PANEL
Delta T° vs. flow rate and irradiation
Tamb = 25°C and Tin = 25°C - wind = 1 m/s
DualSun XXXM - 60 - 3BPPI
DT (G=1000 W/m2)
DT (G=800 W/m2)
DT (G=500 W/m2)
0,0
5,0
10,0
15,0
20,0
25,0
30,0
0
25
50
75
100
125
150
175
200
225
250
DT
°
[°
C]
FLOW RATE [L/H/PANEL
Delta T° vs. flow rate and irradiation
Tamb = 25°C and Tin = 25°C - wind = 1 m/s
DualSun XXXM - 60 - 3BPPN
DT (G=1000 W/m2)
DT (G=800 W/m2)
DT (G=500 W/m2)
